Type-writing machine.



J. D. DAUGHBRTY. TYPE WRITING MACHINE. PPLIUATIDN FILED M1113, 1911 Patented Dec. 19, 1911.

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INVENTEIR mz) Hua ATTcujelyEYV J. D. DAUGHERTY.

TYPE WRITING MACHINE` 1411110111011 FILED 111111.16, 1911 1,012 128. Patented 1160.111911.

'I BHEETB-BHEET 24 l 4 WeTNEE-r'i.. INVENFDR:

7% mm. VQW www -HIEATTEJRNEY J. D. DAUGHBRTY.

TYPE WRITING MACHINE.

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Patented Dec. 19,1911.

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J. D. DAUGHERTY. TYPE WRITING MAGHIHB. nmouxox FILED 11411.16, m1.

Patented Dea 19,1911.

1 slums-suur 4.

J. D. DAUGHERTY.

TYPE WRITING MACHINE.'

PPLIGATION FILED MAB. 16, 1911. 1,012,128, Patented Dec. 19,1911. i

7 SHEETS-SHEET 5.

IIHIIHIHHHLIEHI J. D. DAUGHBRTY. TYPE WRITING MACHINE. urum'rrox FILED 3113.16, 1911.

Patented Dea 1,9, 1911.

1 SHEETS-GEERT 8.

INVENTDR= 1|5 ATTURNEY WITNESEEL-i:

J. D. DAUGHERTY. TYPE WRITING MACHINE. APPLIGATIDN FILED MAR. 16, 1911A Patented Dec. 19, 1911.`

WITNESS UNITED STATES Parana? OFFICE.

JAMES D. DAUGHEBTY, OF KITTANNING, PENNSYLVANIA, ASSIGNOB TO'UNION TYPE-'- WRITER COMPANY, 0F ILION, NEW YQBK, A CORPORATION Olli' NEW YORK.

TYPawnITINa )inquina Spiccitication of Letters Patent. f lPatented Dec. 19, 1911.

application inea mmh 1e, 1an., amai nweuva.

To all whom 'it may concern: l'

Be it known that I, JAMES D. DAUoiInn'rr, citizen of the United States, and resident of Kittanning, in the county of Armstrong and State' of Pennsylvania, 'have invented certain new and useful Improvements in Typc-\Vi'iti11g Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to type lactions.

One object of my invention, generally stated, is'to provide a simple and eiicient front-strike type action.

A further object of` my invention, generally stated, is' to provide a tpe action which affords an easy start an ,in which the' type bar receives a'n accelerated movement as it approaches the rinting position.

A still further object o my invention is to rovide a structure whereby a substantiallyuniform leverage, a substantially uniform touch and a uniform extent of di of the different keys is provided througiout the system.

Another object of my invention `is'to provide n type action in which comparatively simple and etiicient means are provided f or preventing a rebound of the type bars from the type rest, thereby avoiding the liability of adjacent type bars colliding near the type basket under a rapid operation.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of -parts and combinations of devices to be described in the following specification and particularly pointed out in the appended tion lshowin claims.

In the' accompanying drawings wherein like 'reference characters indicate corresponding parts infthevarious views, Figure 1 -is'a skeletonized side elevation of one form of type action embodying m inven-l tion. Fig. 21s a diagrammatic si e elevaa number of the type actions. Fig. Sis a iagrammatic transverse vertical sectional view' showing a number of the type actions., Fig. 4 is a skeletonized' side elevation showing a number' of type actions embodying a Vmo ied form of construct-ion. Fig. 5 is a diagrammatic horizontal sectional view ot the construction repre-nted ansverse vertical sectional view showing a porforwar tion of the formof construction re resented i`n Figs. 4 and' 5. Fig. 'I is a ske etonized side elevation of a still further modification of the type action.

'[:he present invention is in the nature` of 60 an improvement on a construction disclosed. in my application Serial Nos, 283,758 and 423,948, and Ocroiier 21st, 1905 and March 28, 1908 respectively, and has some of the same genera in the present case, however, are restricted to featuresnot disclosed in said prior a, plications. Some of the features disc osed herein are. claimed broadly in mvjPatent objects in view. `The claimsc No. 997,441, dated July 11, 1911, the claims herein to such features being restricted to' a construction not shown in said patent. A

Referring more particularly to Figs. 1, 2 and 3, key levers 1 of the'second order are fulcrumed on a fixed pivot 2'at the rear ends `f` thereof and are provided with the usualy finger keys 3. Each key lever is preferably provided with a plate 4 screwed, riveted or otherwise fastened to one side thereof, as at Each key lever coperates with an' alfI angular sub-lever 6 fulcrmed on a fixed' pivot 7 arranged beneath the system of key levers. Each sub-lever 6 as a rearwardly and upwardly extending arm 8 and a. forwardly and upwardly extending arm 9.

Each arm 8 is provided with a Contact face i 10 which coperates with a contact face 11 on the lower edge of the associated plate et.

One of these contact faces, 10 in the present instance, is curved Ato provide a rolling con-1 96 tact or engagement between the and its associatedsublever 6.

From an `inspection of F ig. 1 i't will be observed that at the depression of a keythe point of engagement or contact between ,thd

key lever and sub-lever 6' recedes fromthe fu crum 2 of the key lever and approaches nearer to the pivot 7 of the sub-lever. Each sub-lever 6 is slotted at 12 to receive an anti-friction roller 13V carried -by a sholll- ..1020 dered screw or pin 14 which projects laterally from a second sub-lever 15. Th'is second sub-lever is fulcrumed on a iixed" ivot 16 arran ed above-the associated keyv ever and is bifurcated to` extendin anti-friction roller Y18 anda forwardly extending arm `18. This second sublever hasan' uprl htarm` 19 which is connected tothe end of a pull link 20,`

key lever provide a rearwardly 166 arml? which carries Vthe -oE-set jjj turn is connected at its rear end to the crank arm of a type bar 21. The arms 17 and 19 are arranged in the same plane as the associated key. lever, whereas the arm 18 is bent sl' htly at 113l so that said arm is slightlyotset and arranged beside the associated key lever. The forwardly extending arm 18 of each soulever 15 is provided with an abutment or shoulder 25- which,I

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when the parts are in the normal position, as shown in full lines in Fig. 1, cotiperates with a pin 2G which projects laterally from the associated key lever 1. Each key lever is formed with a recess or notch 27 provided to receive the arm 17 of the associated sul).- lever 15. 4

T he type bars are segmentally arranged and are pivoted at 22 to lswing' upwardly and rearwardly to strike against the front face of a platen 23; the type bars being normally supported on a type rest 24. A contractile restoring spring 28 is connected to the upright arm of the companion sub-lever 15 as indicated at29, whereas the opposite end of the springl is connected at 30 to an upwardly extending ear formed on the plate 4 carried by the companion key lever.

From an inspection of Fig. 2 it will be' seen that although `the varlous sub-levers 6 are of the saine size or substantially the same size, the various curved contact faces 10 on the sub-lever 6 vary according to the lengths of the different key levers so as tO )rovide a uniform dip of the different finger lieys 3 throughout the system and provide a. substantially uniform leverage. This l uniform dip of the keys is indicated by a comparison of the dotted line showin of the in Fig. 2 with the full line positions of the keysrepresented in this figure.

From an inspection of Fig.'3 it will be observed that the sub-levers 15 are gradually longer as the `sides of the system are approached, and that the pivots 16 for the various sub-levers 15 are arranged in a curve so that the same ratio of lever arms is maintained above and below the ivots 16 throughout the system, in order trat a substantially uniform leverage mag' be provided throughout the system. It will also be seen from an inspection of Fi 3 thatthe sublevers 15 at the sides of t e system have a slight detlecton inwardly 'to compensate for the variation in width between the system of type hars and the systemof key levers. By this construction and arrangement a direct pull is exerted on cach link 2O fore and aft of the machine and this pull is transmitted fore and aft of the machine to the type bar.

From an inspectionof Fi 1 it will be observed that a depression o the linger key is eti'ective to transmit movement to the. associated sub-lever 6 through the rolling contact or engagement therewith, and that this movement is transmitted to the second subtion.

vkey in Iii tige laver 15 by the pin or roller and slot or pin and slot connection between the two sublevers, thereby moving the companion pull link 20 forwardly to move the associated type bar to the printing position. T he depression di a finger key 1s effective to stretchA the sprin 28 and on release of pressure from the finger key this spring with the aid .of the weight of the returning typebar effective to return the parts to normal posl- Moreover, the spring tendsv to maintain a constant engagement between the key lever and the sith-lever' 15 and prevent the key lever from jumping. In some cases it inay be found desirable to provide an additional 4restoring spring coperative directly with the key lever. The rolling fulcrum or engagement between the key lever and the sub-lever 6 of each type action is effective to provide an easy start t0 the ,first part of the ke depression and to gradually accelerate tie type har in its movement as it approaches the printing position. This is clearly indicated by a comparison of the different positions a, b, c, d and e of the finger 1 with the corresponding positions of ty e bar indicated aba., b, c, d and e. It wil 4be understood that the slot 12 and the pin 14 and its roller 13 virtually constitute a pin and slot or sliding connection between the sub-lever (i and the suhlever 15 of each type action. Moreover, it will be understoodthat this is a direct and positive connection between these sublevers. Upon reference to Fig. 1 it will be seen that the shoulder 25 on the sub-lever 15 coperates with the pin 26 on the associated key lever when the parts are .n the normal or full line position. This enga ement is effective to prevent a rebound of t e ated type bar from the type rest 24. Thus, any tendency of the type bar to rebound exerts a forward pressure on the link 20 and tends to turn the sub-lever 15 on its pivot 16 so that there isa tendency to move the upright arm 19 of this sub-lever forwardly and to move the arm 18 thereof rearwardly. This movement is opposed-by the engagement between the shoulder 25 on the sublever and the pin 26 on the key lever; In other words,` any reboundof the type bar from the type rest 24 tends to move the .arm

levers are arran ed in the rear of the 'type bars instead of eneath them as in the previously described construction. The'fkey nomin levers 81 are levers of the second order fulcrumed at their rear ends on fixed 'lvots 32 and provided with linger keys 33..

' edge of each key lever constitutes a contact face 84 which is adapted to coperate with a y contact between the -key lever and the sublever 36`recedes from the fulcrum of thckey lever and gradually approaches the fulcrum 37 of the sub-lever, thereby affording a gradual acceleration of the movement ofthe type bar as it ap roaches lthe printing'point as will hereina ter more clearly appear. As in the previously described construction, the contact faces 35 on the sub-levers 36 may be varied in order to compensate `for the dill'erent lengths of key levers and to provide a uniform dip of keys and leverage throughout the system. l

A depending arm 39 en each sub-lever 36 vis connectedby a lcontractile restoring spring 40 with a depending arm 41 on 4the companion 'key lever. Each subflever 36 is slottcd at 42 for the reception of an antifriction roller 43arranged on4 one sidel of an upright subleve'r 44 and mounted thereon by. a 'pivotA-. The sub-levers 44 are levers of the first order fulcrumed on a. fixedpivot 46 which, as in the previously deecrib'ed construction, is a curved pivot or line of pivofs situated above the key levers, as indicated in Fig. 6. mat-1. key lever* is4 rovidcd with a laterallyl projecting pin 4 with which the lower arm of the upright sub-lever 44 engages when the artsare in the-normal position, as shown in ull lines in Fig. 4. The lower arm of each sub-lever 44 is cur-ved rearwardly at 48A and it will be understood that during the depres- .sion of a key the pin 47 on 'the associated key lever is moved down to the curved portion 48 of the sub-lever during the depression' of the key. In other words, the lowc'tV Aamil' of each sub-lever 44 is formed eo that bare contact between the in 47 on the ke A lever and the lower, end o the sub-lever is `rovided during.the depression of a key. is arrangement enables the parts to lock the type bar against rebound from the typev rest, as will hereinafter more clearly appear. The upper end of each u right sul-lever 4A: is connected to 'a pull lin 49, which in turn is pivoted atits forward end to the crank arm of a type bar 50. -f'The t bara are segmentally arranged and are plvotod at v51 to he lower- -scrilwd, l am ena connection fore and aft of the macnme swing upwardly and rearwardly and to strike against the front face of a platen 52.

By arranging the sub-levers' and 44 iii the rear of the ty )e bars in' the manner delliled to provide a strai -bt etween the suh'levers 44 and the ytype bars without bending the sub-levers.I 'lhia will be understood from an inspection of 5 and 6 from which it will he seen that the sub-levers 44 like the corres )onding sublevers in the reviously descri ed construction vary in ength from the renter to the sgides of the'system, but that the pivot or septirate pivots 46 for the different sub-levers are arranged in a curved line, as indicated in Fig. 6, and that the same ratio isnmintained between` the-'upper and lower arms of the different Sub-levers 44 to provide a substnnv tially uniform leverage, as in the construeA tion previously described.- Moreover, it will 'be seen that these sub-levers 44 are each a.rranged to swing throughout their length m a single vertical plane, and to ell'ect a pull on the type bars directly fore and aft of the niachine. It follows therefore that the width of the system of sub-levers 114 corresponds substantially to that of the width of the type hars. 'l'hccompensation for the dllcreneo in width between the system of sub-levers 44 and the key-hoard of the machine is effected by bendingr the key levers at the sides of the system or farming them outwardly and for-. wardly from a line forward of the sublevers 44 and 3G as indicated -at 53 in Fig. 5. The rear end portions olythe key levers, however, are arranged in Jarallelism so that the contact 34 on each ey lever muy properly cooperate with thc contact face 35 on the associated sub-lever 36, and all lside or lateral strain between the key lever and the type nur is avoided.-

From an inspection of Fig. l it will 'he understood that a gradual acceleration in the movementof the type liar is effected during the depression 'of the finger key, and

that the construction is such as to provide` an easy start or to afford a light, resilient touch at the lirst art ofthe ke depression. This will be clearly undcrsood, it is believed, from a comparison of the different positions of the key during,lr a depression thereof indicated at o, b, c, l and e. It will be seen from this that the last fifth of the extent of movement of the key in the depression thereof 'is effective to move the type ar from the position yshown atfd to that indicated at e, or nearly one-half the complete movement of a bar, whereas the other four-fifths of the extent of key' depression is required to move the type bar through-A the first half of its movement. The restormg sprin during t e depression of a key and the 40 of each type action is stretched power exerted by the return movement of the type bar, is effective to restore the parts to normal position when pressure on the depressed finger key` is released. Moreover, 5 each spring 40 is eil'ective to maintain con stunt coperation between the associated sub-lever 36 and its key lever 31 during the operation of the action. In some instances, however, it may be found desirable to provide an additional restoring spring connected either to the key lever or' type bar.

From an inspection of Fig. 4 it will be understood that any tendency of the type bar to -rebound from 'the type rest 54, on which the type vbars are supported in normal position, tends to force the associated link 49 rearwardly and to turn the sub-lever 44 connected therewith on its pvot 46. This movement is resisted by the pin 47 with which the lower arm of the sub-lever 44 coacts, the strain exerted on the pin being transmitted longitudinally bf the key lever against the fixed pivot 32 of said key lever. It will be understood that in the operation of each type action the depression of a finger key is effective to move the pin 47 downwardly andthe path of movement of the surface on the lever 44 with which the pin co-acts is such that the pin does not obstruct the turning movement of the sublever at this time. This is. clearly indicated,

by a comparison of thefull and dotted line positions of the parts shown in Fig. 4. l

In Fig. 7 I have indicated a still further modified form of ty e action embodying my invention. In this ibrm of the construction a keylever 55 is fulcrnmed on a fixed pivot 56 and is rovided with-a finger key 57. Each key ever has attached to one side thereof a plate 59. Each plate may be adjustably attached to its key lever by binding screws 58 extending through slots 58* in the plate. This connection atlords an adjustment of the plate to different set positions longitudinally of the key lever, and also ail'ords a slight up and down adjustment of the plate if desired. The lower edge of this plate forms 'a contact face (50 which coperates with a contact face 61 cn one arm 62 of an angular sub-lever G3. One of the contact faces, 61 in the present instance, is curved to rovide a rollingfulcruin or engagement ctween the key lever and sub-lever 63.. The various sub-levers arefulcrnmerl on a fixed pivot 64 arranged beneath the system of key levers. The anglilar lever also has an upwardly extending arm 65 slotted at 66 for copcration with an anti-friction of a second sub-lever 68 by a screw or pin G9 projecting laterally from one side of the sub-lever 68. Each upright sub-lever 68 is fulcrumed on a fixed pivot 70-above he key lever end has its up er end connected toa 66 pull link 71 which in turn is connected at roller 67 mounted on one, side its forward end to a crank arm of a type The type bars are segmentally a'rranged wld are pivoted at 73 to swig upwardly i rearwardly and to strike against the from; face of a Vplaten"74. 4The segmetally arrangedtype bars are all supported at their forward ends on 'a ty e rest 75 when the type bars are in norma position.

A contr: fle restoring spring 76 is connected at one end -to a'n off-setdprojection orv arm 77 on the sub-lever 68 an at its opposite end to the key lever orto the plate 59 fixed thereto. The pull of this spring=1^isV exerted to maintain the engagement between the contact faces and 61 on the ker s' lever and sub-lever 63, respectively, at all times during the operation of the type action. This restoring spring, together 'with the weight of the returning type bar, is;Y

also effective to returnthe various parts of the type' actionto normal position as in the previously described constructions.

It will be observed that a shoulder 78 is formed on the rear upper cprni' of the plate 59 for coperation with a.' shoulder or contact face 79 on the sub-lever 63 when the parts are in the normal position.` The `ef feet of this engagement between the key lever and sub-lever is' to prevent the type bar from rebounding from the type rest 75. Thus any tendency of the type bar to re- -bound from the type rest exerts a longitudinal rearward strain on the link 71 and tends to turn the sub-.lever 68 on its pivot 70. This tendency will be to turn the upper end 7of the sub-lever 68 rearwardly and the lower arm thereof forwardly. This turning movement of the sub-lever at this time is resisted by the en agement between the contact faces,- shoul ers or abutments .78 and 79. ln short, the tendency of the type bar to rebound tends to exert a pressure to move the arms of the sub-lever 63 forwardly and this strain is exerted longitudinally of the key lever against the fixed ivot 56 which resists any movement of die parts. A depression of the finger key, however, is effective to disengage the Vshoulders 78 and 7 9 to effect an actuation of the type bar, the shoulder 78 followin the curved face 80 on .the sub-lever 63 uring the depression of the key. The adjustment of each plate 59 enables it to be set relatively to the other parts to pro erly co-act therewith under different con itions.

It will be observed that the depression of a key is effective to bring about a rolling or rocking contact or engagement between the contact faces 6Q and 61 land to vary the point Vof this engagement; the contact approachfulcrum of the sub-lever ing closer to 4the 63 as the key lever is fords' an easy touch'at the rst vpart of the key depression and effects a adual acceleration in the movem'ent of e type bar depressed. This afdesired, the fupright sub-lever` 68 'may be I the construction shown in Fig. 1 may be arrangixi in a'eurve'd departing 'as it approaches the printing -position as in the previously described constructions. Ii

mounted on a curved pivot or Aupon pivots line to aiford a sub- -etantially 'uniform leverage and thecurved contact faces 61 on different of the sub-levers 63 may be varied to provide -a.'uniform dip of the different keys throughout the system, unda' substantially uniform leverage on the diierent type actions thr'ogughout thesystem, all as provided inthe constructions previously described.

Adirect alot and roller `Various 4features disclosed in the differentv forms of, the inyentioi'i andl illustrated in the different figures of thedrawing may be used separately or lcombined; it rbeing uriderstood, for instance, that. the .platc J4 in made adjustable as in 'the construction shown iii Fig. V7. Moreover, the variation of the curved contact faces as shown in Fig.

2 may be employed in theother'cans'tructions illustrated.

Various changes may be made without invention.

from the spirit and scope ofi my ,connected with said angular sub-lever and W'hat I claim as new and'desire to securev l by Letters Patent,.is: r -J -1. In a typeivritiiig machine, tlie'combination of a key lever,

a type bar, a second subdev-er, andan anti-1 friction roller carriedfby one of said sub-- 35' levers and working Vina slot in the othero said sub-levers, the second. nicntionedfsubleve'r being operatively connected with saidl type bar.

2. In a typewriting machine, the combione' of said Asub-leve`rs 'and working `in a4 slot--n the other ofsaidfsub-levers'so as to constitute a direct connection"'between the sub-legers, said last mentioned sub-,lever being o eratively connected with the type bar. 3. n a typewriting. machine, the combination of a key leverb the second order, a

sub-lever having a rolling contact Withthe 'key lever, a tyipe bar,and a 'second sub-lever said type bar and having a direct sliding of the first or eroperativ'ely connected with engagement with said-'first mentioned sublever. l

4. writing machine, the combi- -nationgb a ey-lever oi. the second order, an

angular sub-lever having a rolling contact withbaid keyglever, a type bar, and a sec- 'ond sub-lever@ the firstV order bar and having a Y,

operatively www 'and im an angular sub-lever, .having a rolling Contact with 'said key lever,

are in normal position to engagement with said angular sublever.

5: Inra tyewriting fmaohine, the combi nation of a ey lever of the second order, an anuglar sub-lever pivoted on a fixed fulcrur'n neath the key lever and having a rolling-gcontact with ,said key lever, a type bar, and a sub-lever of the irstforder pivoted on a fixed fulcrum above the key lever and Igeratively connected to said type bar and4 irectly connected with said 4angular sub-lyer by apin and slot connection.

l 6, gn a tyliewriting machine; the combinatioijiof a ey lever, a sub-lever having a rolling contact with said key lever, a type bar, ,it second sub-lever directly connected with" said first mentioned subdever and operatively connected with said type bar, and means carried in fpart by the key lever and inI part by one o said sub-levers for locky,ing the type bar against rebound when the lparts are in normal position.

"34.7. In u typewriting machine, the combination of a key lever, an angular sub-lever having :i rolling contact with said key lever, a type bar, a lsecond sub-lever directly loperatively connected with said type bar, and means carriedin part'by 4the key lever lever' for locking the type bar against rebound wlien the parts are in normal position;v

8. In a typewriting machine, the combinationiof a key lever, an angular subdever having a rolling contact with said key lever, a typebar, a second sub-lever directly con-` nected with said. first mentioned angular sub-lever and operatively connected with said ty e bar, afstc or abutment 'carried .by the vey lever, an a coperativestop or abutment carried by the second sub-lever, said abutments coperatin when the parts ick the type bar against rebound. f

9. In a tv ewriting machinefthe combination of a ey lever, a.sublever having a rolling contact with said keylever, a type bar. a second sub-lever directly connected with said first mentioned sub-lever b a pin and slot connection and operative y con .nected with said tyEe bar,ka lalterally p'o# ey ever, an a.

jectng pin carried y the shoulder or abutment carried by the second mentioned' sub-1ever and 'which is coperative with the pin on the key lever to lock the type bar against rebound when the parts are in normalposition.

10. In a typewriting machine, the combination of a series of t e bars, a series of key levers, a series of su -levers of uniform Vsize each havin a rocking contact with the associated key ever to alordV an accelerated movement of the type bar as 1t approaches art by said second mentioned sub and coperative directl series of sub-levers pivoted in an arc and les with said type barfa ke levera ev connected with said type bars and directly connected with saidserics of angular suhlevers by pin and slot connections.

, 12. Ina typewriting machine, the combination of a series of ty e bars, a series of key levers, a series of suli-levers of uniform size 'eac having a rocking contact with the assocatI d key lever to aii'ord an accelerated movement of the type bar as it approaches the printing position, a second series of sublevers connected with said type bars and coy operative directly with said first mentioned series of sublevers, the connection betweenV the two series of sub-levers being formed by an. antifriction roller carried, by' one of the sub-levers working in a slot in the associated sub-lever with which' itis connected.

13. In a typewriting machine, the combination of a type bar, a suhflcver connected second sublever actuated from t e key er by a rolling Contact therewith and operative to actuate said first mentioned sub-lever, and 'an abutment on the key lever with which said first mentioned sub-lever coperates when the parts are in normal position to lock the type har against rebound from the type rest.

14. In a. typewritin'g machine, the combination of a type bar, a sub-lever connected with said type barA a ke lever a second sub-lever actuated from t e key lever by a rolling contact therewith and operative to actuate said first mentioned sub-lever and a sto pin'carried ,by and projecting Alaterally rom the key lever and with which said first mentioned sub-leverl cpperates when the parts are in normal position to lock the type bar against rebound from the type rest..

l5. In a typewriting machi, the combination of' a type bar, a sub-lever connected with said type bar, a key lever, a se ond sul lever,- a direct sliding connectie be' tween said sub-levers and by which one^sublever is operative to actuate the other, and an abutment on the key lever with which one of said sub-levers cooperates to lock the type bar against rebound from the type rest.

16. In a typewriting machine, the combination of a type har, a sub-lever connected with said type bar, a key lever, a second sub-lever, a direct pin andslot connection between said sub-levers, and a pin project ing laterally from said key lever and with which 'said first mentioned sub-lever cooperates whcn the parts are in norma p osition to lock the type har against re ound from the type rest. i

17. In a typevvritinp,r machine, the combination of a series of type bars, a series of sub-levers of the first order operatively connected with said type hars, said sub-levers varying in length but having the length of their arms on opposite ,sides of their pivots in the same ratio, a ysecond set of sub-levers directly connected by pin and slot connections 'wi h said tirs-t mentioned sub-lovers. and a set of key levers having a rolling engagement with said secondset offsuh-ievers.

18.111 a frontsfrike typewritin machine, the combination of an, upward y and rearwardly striking type liar adapted to strike against the front face of the platen, a substantially horizontally disposed link connected with said type bar, a key lever, an angular or bell crank sub-lever arranged beneath the key lever and having a rolling contact with said key lever, an intermediate actuating connection between said angular subdever and link t effect a movement of the link fore and aft of the machine to actuatethe type bar, and a contractile spring" carried at one. end by the key lever and at its opposite end by said sub-lever.

Signed at Kittanning, ,in the count-y -of Armstron and State of ffennsylvania',` this 8th day o March, A.. D. 1911.

. JAQMES D. DAUGHERTY. Witnesses: 0

HARRY P. Boan'ra, .Vaima D. Dapemzm. 

